RegVirtual (VirtualRegHi u) -> text "%vHi_" <> asmSDoc (pprUnique u)
RegVirtual (VirtualRegF u) -> text "%vF_" <> asmSDoc (pprUnique u)
RegVirtual (VirtualRegD u) -> text "%vD_" <> asmSDoc (pprUnique u)
RegVirtual (VirtualRegHi u) -> text "%vHi_" <> asmSDoc (pprUnique u)
RegVirtual (VirtualRegF u) -> text "%vF_" <> asmSDoc (pprUnique u)
RegVirtual (VirtualRegD u) -> text "%vD_" <> asmSDoc (pprUnique u)